Recognised as Colour
#FF043A
- #FF043A
- Red
- Dark
- Nearest: Crimson
#FF043A is a red with RGB values 255, 4, 58 and HSL 347°, 100%, 51%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Crimson.
Colour values
#FF043A#FF043A
HEX#FF043A
RGBrgb(255, 4, 58)
RGB (0–1)1, 0.0157, 0.2275
RGB percentages100%, 1.6%, 22.7%
HSLhsl(347.1, 100%, 50.8%)
HSV / HSBhsv(347.1, 98.4%, 100%)
CMYK0%, 98.4%, 77.3%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,712,762
CSS custom property--colour: #FF043A;
Brightness & contrast
Relative luminance0.21652WCAG 2.x, 0 is black and 1 is white
Perceived brightness140.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.33:1
Contrast with white3.94:1WCAG normal text: Fail
Contrast with black5.33:1WCAG normal text: AA
Greyscale equivalent#3D3D3D
Inverted#00FBC5
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.94:1WCAG large text: AA
Contrast with black, large text5.33:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#04FFC9
Analogous#FF04B7, #FF4C04
Triadic#3AFF04, #043AFF
Split complementary#04FF4C, #04B7FF
Tetradic#B7FF04, #04FFC9, #4C04FF
Tints, shades & saturation
Channel breakdown
R255
G4
B58
Red255 (100%)
Green4 (1.6%)
Blue58 (22.7%)
Hue347.09°
Saturation (HSL)100%
Lightness50.78%
Dominant channelRed
Hex per channelR FF · G 04 · B 3A
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